Answer: A
Explanation: the change in seasons is caused by Earths axis tilt and revolution and position near the sun
Acid - base indicators (also known as pH indicators) are substances which changecolor<span> with pH. They are usually weak acids or bases. Consider an indicator which is a weak acid, with the formula HIn. At equilibrium, the following chemical equation is established.</span>
<span>A group of cnidarians that provide food and shelter for many kinds of animals are the ( </span>D. Corals )